Improvement in steam-generators



0. W.A B AYLBY. STEAM GENERATOR.

15,114,153E Papentledsept; 13,.1a64.

my H- am a" .0.1.2 1172220111.r :it nmyconcerm- UNITED; STATES' JP A1-ENT HFICE.'

" OLIVER WQBAYLEY, or Bos'roN, 4iurisSACHlisa-"rire,

ilnruovizlvlEN-r INI STEAM-GENERAT-oas;

j-Beit known that I, GLWER W. Blei/LEY, of

.-'Beston,- in the countyofuiiblk and State of Massachusetts, lhaveinventcd an Improved teanij-Generator5 of which the following. is-'a nlhgelear, and,"exact description, reference Fjgure' l fisa` -vperspecti've wiiew of my iin- 1rovedffstea'mgenerator. Fig. 2I'isiacentral vertical-sectionthrouglr'the s ame."

My invention, which is partic'ularly'applica-v -ble toupright tubular bolers,'coli'sists inzq'assfing a colurnujfzotf heated mercury. through-ay continuouspig -which encircles-theinterioxcfY the furnace ail`;[iasses up outsidev "the boiler,

zn'hich'itenters; below the level of .the water, -iml'fpassegddmifaronndtlgcfucs in contact Awith the water, and' again outside down' 'into the furnace, the Amercury as it Vis heated in the furnacerising,r up-into that portionfof tlie pipe in contact with'thc water and imparting -itsheat thereto, and as it isA cooled descending by another portio'ncf the pipeoutside the boiler again intothe furnace to-'be 'reheated, l by which a Yrapid circulation ot' the mercury is' eti'ccted andl 'the steam-generating powers of the' boiler greatlyiincreased. i' To enable others skilled in the art to miderf stand and'usemy invention, I will proceed to describe thel manner in `wh`ich`I have carried it out.-

In the said 'drawings,- A is the boiler; B; the furnace, anda the grate-bars.' .C is a continuous iiipe, which is coiled around the interior of thefurnace, and thence passcsup outside the boiler, which it enters at 11, below the waterlevel, and is coiled around the interior l of the boiler outside the dues c, passing 'ont at' d and descending to the bottom ofthe coil in the furnace' I. 'D is an expansion-tube, which is closed at the top and is connected with the tube O at c. The tube l) being removed, a

' suiiicieutquantity ofmcrcirry is'pourcd in at e,'so that when the lmercury isheated to 670C? 4Fahrenheit, or thereabo'nt,"it will entirely till the tube C. The tnbeD- is then 'serewed'on`, closing thetube G, andmaking it perfectly airtight. The iirebein'g no w started "infthefur- 'throughfthe'standing -fot'the tube ,G which l1thue'feti'ected,' andthe rapidi'tywith whichthc' steam' is-'generated greatly increased;V .In'the vent any liability .of straining the tube C. I do not confine my sclt. to the'mcthod of ar- -'rangingipthe tipe() in coils as above described, as it .is evitent thutit may be-arranged in 'Various' wa'ys `Without departing from, the 'spirit ot' ihyinvention, care being had to' so yplace the -pipe that -the column of mercury may have'the required circulation, and it is obvious fthat ,"instead of using one pipe U only, two oi` pose specified. e

D. W. BAYLEY.

Witnesses:

N. W. Summits,

Taos. R. Rohan.

nace, the fmercurv .as 'it isheatedriesapidly part intoltliat portion 'is .f surroundedv by water,y t" which it'mparts itsjieat, audios the mercury-isoooled; it' descends' byfth'o;-portion 4 again iiito the' furnacewhere itisreheated and passed'up as before. l.A perfect and rapid circul'atonofthe mercury through vthe pipe' C is,"

ferent ofthe mercury heilig heated' to such a .degreeas telnorethan ll the tube'vC, itiwill rise into. the-expansion-iube I), and th ne prc more similar pipesgiilled with' mercury may be l boiler, substantially as seti'orth, for tl|c pur-f 

